Correct Option: C

The Thar Desert also known as the Great Indian Desert is a large, arid region in the northwestern part of the Indian subcontinent and forms a natural boundary running along the border between India and Pakistan. It is the world’s 18th largest subtropical desert. Thar Desert extends from the Sutlej River, surrounded by the Aravali Ranges on the east, on the south by the salt marsh known as the Great Rann of Kutch (parts of which are sometimes included in the Thar), and on the west by the Indus River.